Web.py outputs 0.0.0.0:8080. On windows, localhost and 0.0.0.0 work. But on mavericks, localhost doesn't work! 0.0.0.0 works, though. Can someone explain what 0.0.0.0 is? Why does web.py say you can enter a ip and port in command line and it will run there? (You can't run on someone else's ip,can you?)